<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <link rel="stylesheet" href="common.css">
  <link media="(orientation:landscape) and (min-width:500px)" rel="stylesheet" href="desktop.css">
  <link media="(max-width:500px)" rel="stylesheet" href="mobile.css">
  <style>
    #checkbox:checked ~ p{
      display: none;
    }
  </style>
</head>
<body>
  <input id="checkbox" type="checkbox">
  <p>AAAAAAAAAA</p>
  tianchongneireon
</body>
</html>